<template>
  <header class="header">
    <!-- 头部的第一行 -->
    <div class="top">
      <div class="container">
        <div class="loginList">
          <p>尚品汇欢迎您！</p>
          <p v-if="!userName">
            <span>请</span>
            <router-link to="/login">登录</router-link>
            <router-link class="register" to="/register">免费注册</router-link>
          </p>
          <p v-else>
            <span>{{userName}}</span>
            <a class="register" @click="logout">退出登录</a>
          </p>
        </div>
        <div class="typeList">
          <router-link to="/center/myorder">我的订单</router-link>
          <router-link to="/shopcart">我的购物车</router-link>
          <router-link to="/communication">组件通信</router-link>
          <a href="###">尚品汇会员</a>
          <a href="###">企业采购</a>
          <a href="###">关注尚品汇</a>
          <a href="###">合作招商</a>
          <a href="###">商家后台</a>
        </div>
      </div>
    </div>
    <!--头部第二行 搜索区域-->
    <div class="bottom">
      <h1 class="logoArea">
        <router-link class="logo" to="/home">
          <img src="./images/logo.png" alt="" />
        </router-link>
      </h1>
      <div class="searchArea">
        <form action="###" class="searchForm">
          <input
            type="text"
            id="autocomplete"
            class="input-error input-xxlarge"
            v-model="keyword"
            @keyup.enter="toButtonSearch"
          />
          <button class="sui-btn btn-xlarge btn-danger" type="button" @click="toSearch"> 
            搜索
          </button>
        </form>
      </div>
    </div>
  </header>
</template>

<script>
import bus from "@/assets/bus"
export default {
  name: "Header",
  data(){
    return{
      keyword: "",
      pageNo: 1,
    }
  },
  computed: {
    userName(){
      return this.$store.state.user.userInfo.name;
    }
  },
  methods:{
    // 跳转搜索页，编程式路由跳转push/replace
    toSearch(){
      // 路由传递参数：
      // 1、字符串形式
      // this.$router.push('/search/' + this.keyword + '?k=' + this.keyword.toUpperCase());
      // 2、模板字符串形式
      // this.$router.push(`/search/${this.keyword}?k=${this.keyword.toUpperCase()}`);
      // 3、对象
      // this.$router.push({
      //   name: "search",
      //   params: {keyword: this.keyword},
      //   query: {k: this.keyword.toUpperCase()}
      // })
      // 4、params传空
      // this.$router.push({
      //   name: "search",
      //   params: {keyword: "" || undefined},
      //   query: {k: this.keyword.toUpperCase()}
      // })

      // 5、props传参
      // this.$router.push({
      //   name: "search",
      //   params: {keyword: this.keyword || undefined},
      //   query: {k: this.keyword.toUpperCase()}
      // }, () => {

      // },() => {
        
      // },)

      // 6、如果有query参数也带过去
      if(this.$route.query){
        let locations = {
          name: "search",
          params: {keyword: this.keyword || undefined},
        }
        locations.query = this.$route.query;
        this.$router.push(locations);
      }
      bus.$emit("changePageNO", this.pageNo)
    },
    toButtonSearch() {
      this.toSearch();
    },
    // 退出登录
    async logout(){
      try {
        await this.$store.dispatch("userLogout")
        this.$router.push("/home")
      } catch (error) {
        alert(error.message)
      }
    },
  },
  mounted(){
    // 通过全局事件总线清除keyword
    this.$bus.$on("clear", () => {
      this.keyword = "";
    })
  },
};
</script>

<style scoped  lang="less">
.header {
  & > .top {
    background-color: #eaeaea;
    height: 30px;
    line-height: 30px;

    .container {
      width: 1200px;
      margin: 0 auto;
      overflow: hidden;

      .loginList {
        float: left;

        p {
          float: left;
          margin-right: 10px;

          .register {
            border-left: 1px solid #b3aeae;
            padding: 0 5px;
            margin-left: 5px;
            cursor: pointer;
          }
        }
      }

      .typeList {
        float: right;

        a {
          padding: 0 10px;

          & + a {
            border-left: 1px solid #b3aeae;
          }
        }
      }
    }
  }

  & > .bottom {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;

    .logoArea {
      float: left;

      .logo {
        img {
          width: 175px;
          margin: 25px 45px;
        }
      }
    }

    .searchArea {
      float: right;
      margin-top: 35px;

      .searchForm {
        overflow: hidden;

        input {
          box-sizing: border-box;
          width: 490px;
          height: 32px;
          padding: 0px 4px;
          border: 2px solid #ea4a36;
          float: left;

          &:focus {
            outline: none;
          }
        }

        button {
          height: 32px;
          width: 68px;
          background-color: #ea4a36;
          border: none;
          color: #fff;
          float: left;
          cursor: pointer;

          &:focus {
            outline: none;
          }
        }
      }
    }
  }
}
</style>

